From: Aaron DuShey (adushey@xxxxxxxxx)
Date: Sat Apr 22 2000 - 19:08:10 GMT-3
do you have ip classless configured? If not, you the router if seeing a
match for the classfull network, then looking for a subnet of 137.20.x.x.
When not finding the .60 subnet, it will drop the packet. IP classless
allows the router to match the closest supernet if no subnet match is found,
in this case the candidate default of 200.x.x.x.
notice link-
http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113ed_cr/n
p1_r/1ripadr.htm#xtocid2512611
Aaron DuShey-GE Capital Net Solutions
Consulting Systems Engineer
(760)500-1707
CCNP - CNX - MCSE - CNE - Citrix Specialist - ASE- HP Star
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Nnanna Obuba
Sent: Saturday, April 22, 2000 9:23 AM
To: Hedlund, Brad; 'Michael Needham'; CCIELAB@groupstudy.com
Subject: ip default network puzzle
Hi all,
I wonder if any one could give me a clue as to what's happening here..
I have configured igrp with an ip default-network..but each time I try to
ping an 'unknown' network (with debug ip packet on) I get an 'unroutable'
message.
Here's the routing table + error message.
TIA
Nnanna
Gateway of last resort is 137.20.200.17 to network 200.200.200.0
I 172.168.0.0/16 [100/8576] via 137.20.200.17, 00:00:35, Serial0
137.20.0.0/28 is subnetted, 2 subnets
C 137.20.200.16 is directly connected, Serial0
C 137.20.40.16 is directly connected, Ethernet0
I* 200.200.200.0/24 [100/8576] via 137.20.200.17, 00:00:35, Serial0
r4#ping 137.20.60.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 137.20.60.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
r4#
IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
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